PruneYard Shopping Center v. Robins

PruneYard (defendant), a large private shopping center, had its security remove a group of high school students (plaintiffs) who peacefully set up a table to distribute pamphlets and collect signatures on a UN resolution petition, pursuant to PruneYard's policy against publicly expressive activity; the California Supreme Court ruled the state constitution protected the students' activity there, and PruneYard appealed, arguing the state-imposed limitation on its exclusion right amounted to an unconstitutional taking.